Nitrate and nitrite as mixed source of nitrogen for Chlorella vulgaris: Growth, nitrogen uptake and pigment contents

2021 ◽  
pp. 124995
Author(s):  
Victor Pozzobon ◽  
Na Cui ◽  
Alissa Moreaud ◽  
Emilie Michiels ◽  
Wendie Levasseur
Keyword(s):  
Chlorella Vulgaris ◽  
Nitrogen Uptake ◽  
Pigment Contents ◽  
Nitrate And Nitrite

Influence of ammonium, nitrate and nitrite on the performance of the pure culture of Acinetobacter junii

Biologia ◽  
2007 ◽  
Vol 62 (5) ◽  
Author(s):  
Jasna Hrenović ◽  
Yüksel Orhan ◽  
Hanife Büyükgüngör ◽  
Miroslav Horvatiček
Keyword(s):  
Ammonium Nitrate ◽  
Nitrogen Uptake ◽  
Pure Culture ◽  
Oxygen Demand ◽  
Nitrite Concentration ◽  
Phosphate Release ◽  
Acinetobacter Junii ◽  
Uptake Rates ◽  
Complete Failure ◽  
Nitrate And Nitrite

AbstractThe influence of different concentration ranges (0–500 mg/L) of ammonium, nitrate and nitrite presence in the wastewater, on the performance of the pure culture of phosphate-accumulating bacterium Acinetobacter junii in the anaerobic and aerobic conditions, was investigated. A. junii was able to use ammonium and nitrate salts as the source of nitrogen, unlike in the case of nitrite salt. Comparing to the control reactors with the peptone and yeast extract as the sources of nitrogen, at the lowest tested concentration of ammonium and nitrate the performance of the system was inhibited due to the nitrogen deficit in the wastewater, while at the highest concentration it was positively influenced. Nitrite in all concentrations detrimentally affected the phosphate release and uptake rates, chemical oxygen demand uptake rates, nitrogen uptake rates, as well as multiplication of A. junii. The higher the nitrite concentration, the more pronounced was the effect. At the highest nitrite concentration tested a complete failure of the system was observed.

The Heterotrophic Connection in a Photoautotrophic Chlorella Vulgaris Dominant in Wastewater Oxidation Ponds

1993 ◽  
Vol 27 (7-8) ◽  
pp. 151-155 ◽  
Author(s):  
Iris Cohen ◽  
Anton F. Post
Keyword(s):  
Chlorella Vulgaris ◽  
Photosynthetic Activity ◽  
Algal Growth ◽  
Oxygen Demand ◽  
Utilization Efficiency ◽  
Direct Result ◽  
Cellular Division ◽  
Pigment Contents ◽  
Photosynthetic Potential ◽  
Oxidation Ponds

Chlorella vulgaris strain C1 was grown in laboratory under autotrophic and mixotrophic conditions. Cellular division rates increased in cultures supplied with either acetate or glucose. As a direct result respiratory activity was enhanced in those cells, most pronounced in the presence of acetate. Glucose and acetate had opposed effects on the photosynthetic activity of the cells. Cells grown in the presence of acetate had a 3-fold decrease in pigment contents. Since this was mostly expressed in decreased light utilization efficiency of the cells, we conclude that fewer light harvesting antennae were synthesised. Cells grown with glucose retain high pigment contents and photosynthetic activity of the cells was strongly enhanced. It was observed that even though organic matter may support algal growth in oxidation ponds, at the same time one may expect a much stronger oxygen demand accompanied by a reduced photosynthetic potential. This must be considered a burden on the wastewater treatment operation requiring countermeasures to be taken.

scholarly journals Kandungan Pigmen Fikobiliprotein dan Biomassa Mikroalga Chlorella vulgaris pada media dengan Salinitas Berbeda

2017 ◽  
Vol 20 (2) ◽  
pp. 112
Author(s):  
Ali Djunaedi ◽  
Sunaryo Sunaryo ◽  
Chrisna Adi Suryono ◽  
Adi Santosa
Keyword(s):  
Osmotic Pressure ◽  
Chlorella Vulgaris ◽  
Laboratory Study ◽  
Research Method ◽  
Harvesting Time ◽  
Randomized Design ◽  
Pigment Contents ◽  
Completely Randomized Design

Phyobilliprotein (phycocyanin and allophycocyanin) pigments content and biomass of Chlorella vulgarisare affected by salinity related to osmotic pressure and density of media. This study was to determine the effect of salinity on phycobiliproteins pigment contents and biomass of microalgae Chlorella vulgaris. The cultivation used microalgae derived from Balai Besar Pengembangan Budidaya Air Payau (BBPBAP), Jepara. Research method was the Laboratory study with a Completely Randomized Design (CRD). Consisting of one treatment with five stages of salinity treatments: 20, 25, 30, 35, and 40 ppt and using three times of repetition. Analysis of pigments used UV-Vis spectrophotometric extracted with acetone as the solvent. Harvesting time was when it reached at the stationair phase using flocculation method. The results showed that salinity had the significant effect (p <0.05) on Phycobilliprotein pigment and biomass. The treatments of 35 ppt showed that the highest content of phycocyanin and allophycocyanin pigments 1,4426 mg/gram and 1,254 mg/gram and biomass were 0,648 g/L respectively.Keywords: Chlorella vulgaris, salinity, Phycobilliprotein pigment, biomass. Kandungan pigmen fikobiliprotein (fikosianin dan allofikosianin)dan biomasa Chlorella vulgaris dipengaruhi oleh salinitas yang berkaitan dengan tekanan osmotik dan densitas media. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh salinitas terhadap kandungan pigmen fikobiliproteindan laju pertumbuhan Chlorella vulgaris. Biota uji diperoleh dari Balai Besar Pengembangan Budidaya Air Payau (BBPBAP), Jepara. Metode penelitian adalah eksperimen laboratoris dengan Rancangan Acak Lengkap (RAL) yang terdiri dari 5 taraf perlakuan salinitas, yaitu: 20, 25, 30, 35, dan 40 ppt dengan pengulangan sebanyak 3 kali. Analisis pigmen dengan metode spektrofotometer UV-Vis yang diekstraksi menggunakan larutan aseton. Pemanenan biomassa pada fase stasioner dengan menggunakan metode flokulasi. Hasil penelitian menunjukkan bahwa salinitas berpengaruh nyata (p<0.05) terhadap kandungan pigmen fikobiliprotein dan biomasa Chlorella vulgaris. Perlakuan salinitas 35 ppt menghasilkan kadar pigmen fikosianin dan allofikosianin tertinggi, yaitu 1,4426 mg/gram, dan 1,254 mg/gram dan biomassa tertinggi yaitu 0,648 gr/L. Kata Kunci  : Chlorella vulgaris, salinitas, pigmen fikobiliprotein, biomasa

Feasible design for electricity generation from Chlorella vulgaris using convenient photosynthetic conditions

BIOCELL ◽  
2018 ◽  
Vol 42 (1) ◽  
pp. 7-11 ◽  
Author(s):  
M. Moustafa ◽  
T. Taha ◽  
M. Elnouby ◽  
M.A. Abu-Saied Aied ◽  
A. Shati ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Electricity Generation

Chlorella vulgaris Beijer. as biosorbent: biosorbtion of gold and physiological principles of regeneration

2000 ◽  
Vol 2 (3) ◽  
pp. 1-10
Author(s):  
T. G. Gruzina ◽  
L. G. Stepura ◽  
M. N. Balakina ◽  
Z. R. Ulberg
Keyword(s):  
Chlorella Vulgaris
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